Frank s



NITED STATES FRANK S. KETOHUM,

OF NEW YORK, N. Y.

. DUPLEX SYRINGE.

SPECIFICATION forming part of Letters Patent No. 485,698, dated November8, 1892.

Application filed July 9, 1892. Serial No. 439,528- (No model.)

To all whom it may concern/.-

Be it known that I, FRANK S. KETOHUM, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in Duplex Syringes;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters of reference markedthereon,

' which form a part of this specification.

My invention relates to improvements in syringes; and it consists in thenovel construction and combination of parts hereinafter fully describedand claimed.

Figurelis a plan view of my improved duplex syringe, and Fig. 2 is aperspective View of the valve-key removed from the frame.

A A are a pair of ordinary fountainsyringes connected by tubes at a to aY- shaped connection B,provided witha flexible tube 0, terminating in aninjection-tube D.

G is a frame, which maybe of any suitable shape to slip upon the tubes(1 a and contain the key E. This key E is provided with three radialflanges e, e, and 6 and they are arranged to impinge upon the tubing a aand cut off the supply from the receptacles A A or control it at will.

Assuming that the receptacle A is filled with cold water and A is filledwith hot water and the key E is turned so that its flange 6 cuts off thesupply from both tubes and it it desired to discharge the cold water,the key is turned so that the flange ecloses the tube a. While theflanges e and e are clear of the tube a, orin the position shown in Fig.1, the cold water has an unobstructed flow from the receptacle A to thedischarge-tube D. If the key E be turned so that the flange e impingeson the tube a, then the supply of cold water is cutoff and at the sametime the flange e releases the pressure on the tube a and permits thehot water to flow, whereas, if the key is turned so as to bring theflange e into contact with the tubes the supply from both is out 01f.

The various uses to which this invention may be applied will readilysuggest themselves without further description.

Having thus described my invention, what I claim as new and useful, anddesire to secure by Letters Patent of the United States, is

In a syringe, the combination of the liquidreceptacles, the flexible andelastic tubes connected therewith, the frame through which said tubespass, the key journaled in said frame and provided with radial flanges,and the Y-shaped connections provided with a flexible tube having aninjection-tube, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK S. KETOHUM.

Witnesses:

H. J. ENNIS, WARREN O. STONE.

